public class Test {
    public static void main(String[] args) {
        MySingleList mySingleList=new MySingleList();
        mySingleList.addLast(12);
        mySingleList.addLast(23);
        mySingleList.addLast(33);
        mySingleList.addLast(45);
        mySingleList.addLast(455);

        mySingleList.display();
        System.out.println("==================");
        System.out.println(mySingleList.contains(12));
        mySingleList.remove(12);
        mySingleList.display();
        System.out.println("--------------------------");
        mySingleList.addFirst(12);
        mySingleList.addFirst(12);
        mySingleList.addFirst(12);
        mySingleList.removeAllKey(12);
        mySingleList.display();

    }
}

